Lua APA (7ú heag.)

Ross, R. G. (1970). Obligation: A social theory. University of Michigan Press.

Lua i Stíl Chicago (17ú heag.)

Ross, Ralph Gilbert. Obligation: A Social Theory. Ann Arbor: University of Michigan Press, 1970.

Lua MLA (9ú heag.)

Ross, Ralph Gilbert. Obligation: A Social Theory. University of Michigan Press, 1970.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.